On the preparation of metalloporphyrins

Adler, Alan D.; Longo, Frederick R.; Kampas, F. J.; Kim, Jean

doi:10.1016/0022-1902(70)80535-8

Cited by 1,774 publications

(817 citation statements)

References 17 publications

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“…10,[12][13][14]36 This behavior was attributed to steric constraints caused by the support, which modified the iron porphyrin structure substantially in these supported catalysts. 33 Figure 4a and Figure 4b show the spectra of raw chrysotile and chrysotile-APTS, where no peaks are present.…”

Section: Resultsmentioning

confidence: 99%

“…The purity was periodically controlled by iodometric titration. 27 (3-aminopropyl) 32,33 Purification of the iron porphyrins was performed by column chromatography filled with Sephadex, using deionized water as eluent. The products were characterized by UV-Visible and EPR spectrometry and the data were consistent with the expected compound after the metallation reaction.…”

Section: Methodsmentioning

confidence: 99%

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Catalytic activity in oxidation reactions of anionic iron(III) porphyrins immobilized on raw and grafted chrysotile

Nakagaki¹,

Castro²,

Machado³

et al. 2006

J. Braz. Chem. Soc.

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Crisotila natural e quimicamente modificada foi usada como matrizes para imobilização de ferroporfirinas de segunda geração. As atividades catalíticas dos sólidos obtidos foram avaliadas em reações de oxidação de cicloexano, usando iodosilbenzeno como oxidante. Os resultados de catálise foram analisados e comparados aos obtidos pela imobilização das mesmas ferroporfirinas em sílica funcionalizada com 3-APTS, derivadas do tratamento ácido da crisotila. Os resultados preliminares mostraram que os catalisadores são eficientes e seletivos para a obtenção de álcool.Natural and grafted chrysotile were used as matrices for the immobilization of second generation iron porphyrins. The catalysts obtained were evaluated in the oxidation reaction of cyclohexane, using iodosylbenzene as oxidant agent. The catalyst activity for different conditions was compared with results for the same porphyrins immobilized with 3-APTS grafted disordered silica, obtained from acid-leached chrysotile. Preliminary results have shown that high activity can be obtained with short reaction times, and that the reaction is specific for alcohol.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Catalytic activity in oxidation reactions of anionic iron(III) porphyrins immobilized on raw and grafted chrysotile

Nakagaki¹,

Castro²,

Machado³

et al. 2006

J. Braz. Chem. Soc.

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“…Samples 57 Fe-enriched protohemin was prepared by the method described by Adler et al [28]. Native horse heart Mb was purchased from Sigma Chemical Co. Apomyoglobin was prepared by the method of acid acetone and purified by cellulose column.…”

Section: Methodsmentioning

confidence: 99%

Mössbauer spectroscopic evidence on the heme binding to the proximal histidine in unfolded carbonmonoxy myoglobin by guanidine hydrochloride

et al. 2008

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The unfolded heme structure in myoglobin is controversial because of no chance of direct X-ray structure analyses. The unfolding of carbonmonoxy myoglobin (MbCO) by guanidine hydrochloride (GdnHCl) was studied by the Mössbauer spectroscopy. The spectra show the presence of a sort of spectrum in the unfolded MbCO, independent on the concentration of GdnHCl from 1 to 6 M and the increase of the fraction of unfolded MbCO, depending on the GdnHCl concentration. The isomer shift of the iron of heme in the unfolded MbCO was identified to be different from that of the native MbCO as the globin structure in Mb collapses under the unfolded conditions. This result and the existing related Mössbauer data proved that the heme in the unfolded MbCO may remain coordinated to the proximal histidine.

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“…Его цинко-вый комплекс (ZnTPyP) получали по описанной методике, [26][27] физико-химические характеристики полученного соединения соответствуют опубликованным ранее. [28] Хлороформ (analytical grade) (Merck) перегоняли над CaH 2 .…”

Section: экспериментальная частьunclassified

Effect of Transition Metal Cations on Assembly of Highly Ordered 2D Multiporphyrin Arrays on Liquid and Solid Substrates

Ermakova¹,

Enakieva²,

Zvyagina³

et al. 2016

MHC

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On the preparation of metalloporphyrins

Cited by 1,774 publications

References 17 publications

Catalytic activity in oxidation reactions of anionic iron(III) porphyrins immobilized on raw and grafted chrysotile

Catalytic activity in oxidation reactions of anionic iron(III) porphyrins immobilized on raw and grafted chrysotile

Mössbauer spectroscopic evidence on the heme binding to the proximal histidine in unfolded carbonmonoxy myoglobin by guanidine hydrochloride

Effect of Transition Metal Cations on Assembly of Highly Ordered 2D Multiporphyrin Arrays on Liquid and Solid Substrates

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